How to tell what gear ratio is on ford gear

[jhonda]

I got a gear from the classified adds and nothing against the person selling it at all, but it is not marked, and I was wondering if there is a way to tell what ratio it is buy counting teeth?

 

[bill302]

divide the number of teeth on the ring gear by the number of teeth on the pinion gear, example: 41 teeth on the ring gear & 10 teeth on the pinion gear = 41 divided by 10= 4.10..

 

[lang williams]

my ford gears had the ratio stamped on them

 

[jhonda]

thanks its a 3.73

 

[bill302]

what brand of gears are they?

 

[jhonda]

they are ford gears they have ford on them but no markings